Document anonymization software for chartered accountantsAI without your clients' names leaving the firm.

AnonymFiles, document anonymization software for chartered accountants, installed on the firm's computer. It stands out on three points: it processes the whole case file with the same labels across every document, it redacts Word and PDF files inside the document itself, layout preserved, and it puts the real names back into the AI's answer. Everything happens on your computer, with no account and no network call for the license. It also reads .xlsx and .csv spreadsheets, one table per sheet, and you choose whether to mask or keep the amounts. €290 excl. VAT per seat per year, €240 excl. VAT per seat from 3 seats, no page quota. Our anonymization software comparison.

Yes: .xlsx and .csv files are read, one table per sheet, with cell values (without formulas). The copy is a text file, to be reviewed line by line: an IBAN or a name in a cell gets the same label as in the rest of the file.

Yes, for preparing the copies: processing happens on your computer, and no third party receives your documents. What you then give to an AI, and to which one, remains your decision: only the reviewed and approved copy is meant for that.

Its booklet “IA et IA générative adaptées à la profession du chiffre” (August 2025) asks not to put confidential information into AI and to pseudonymize or anonymize the data given to it. The national council's leaflet “Comment utiliser ChatGPT ?” (2024) advises against uploading client e-mails, FEC files or DSN payroll returns that have not been anonymized. ChatGPT and chartered accountants: what you can share.

Yes, if an indirect detail remains visible: a SIREN number left in a header, a trade name, a registered office address, a very recognizable turnover figure. That's why each document is reviewed side by side before export, and one click masks whatever detection missed.

Yes, on a pseudonymized copy. The notice must give reasons so that the taxpayer can respond (French tax procedure code, LPF, art. L. 57): the AI helps you go through it ground by ground and build the reply, due within thirty days, extendable by thirty days on request (art. R*57-1 and L. 57). The company, its managers and its address become labels, and so does the SIREN number, to be checked during review. Back taxes and penalties are masked with one click if the AI doesn't need to see them.

Not directly. Since 25 August 2025, a company director can ask for their home address to be kept confidential, by attaching a copy of the deed in which the mention of their personal address is blanked out by the applicant (Commercial Code, art. R. 123-54-1). That text only covers the address, whereas AnonymFiles' export also masks detected names and dates, which cannot yet be removed one by one. The app helps find addresses across a whole set of deeds. The step-by-step method.

Yes: the national council's leaflet on ChatGPT (2024) lists the analysis of anonymous data among possible uses, once precautions are taken. The company, its managers and their contact details are replaced by labels. Amounts, however, are not detected: they stay readable unless you mask them. Keep those the AI needs to comment on a result or a margin; mask with one click those that would be enough to recognize the client.